File:Streeter1906 fig03.jpg - Revision history

Z8600021: /* Fig. 3. Development of a semicircular canal */

2017-08-16T09:27:52Z

Fig. 3. Development of a semicircular canal

← Older revision		Revision as of 20:27, 16 August 2017
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	A, B, C, and D represent transverse sections of the superior canal (x240), taken at corresponding points from embryos No. ~~163~~, 9 mm.; No.~~109~~, 11 mm.; No. ~~229~~, 21 mm., and No. 86, 30 mm.		A, B, C, and D represent transverse sections of the superior canal (x240), taken at corresponding points from embryos No. {{CE163}}, 9 mm.; No.{{CE109}}, 11 mm.; No. {{CE229}}, 21 mm., and No. {{CE86}}, 30 mm.

	Aa, Ab, Ba,and Bb are explanatory drawings of lower magnification to show the ear vesicle and the situation and shape of sections from which A and B are taken.		Aa, Ab, Ba,and Bb are explanatory drawings of lower magnification to show the ear vesicle and the situation and shape of sections from which A and B are taken.

2015-07-31T10:32:09Z

2015-07-31T10:31:08Z

2015-07-23T07:14:21Z

← Older revision		Revision as of 18:14, 23 July 2015
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			==Fig. 3. Development of a semicircular canal==


			A, B, C, and D represent transverse sections of the superior canal (x240), taken at corresponding points from embryos No. 163, 9 mm.; No.109, 11 mm.; No. 229, 21 mm., and No. 86, 30 mm.

	FIG.4. Diagram representing the growth and stages of differentiation of the human membranous labyrinth. At 31h weeks (6-7 mm.) the ear vesicle consists of two simple pouches, into the upper of which opens the endolymphatic appendage. At 4 weeks		Aa, Ab, Ba,and Bb are explanatory drawings of lower magnification to show the ear vesicle and the situation and shape of sections from which A and B are taken.
	~~sac.endolymph.~~ ,~~sac~~, ~~endolymph. duct. endolymph.~~,
	~~(9 mm.) there is at the base~~ of ~~the vestibular pouch an atrium, the space destined~~ to
	~~form~~ the ~~utricle~~ and ~~saccule. At 5 weeks (12 mm.) this space is circumscribed from the~~
	~~cochlear pouah below by a constriction corresponding to~~ the ~~ductus reuniens,~~ and ~~above~~
	~~Prom the rest~~ of ~~the vestibular pouch by the formation of the semicircular canals. At~~
	~~6 weeks (20 mm.) an ingrowth of the wall of the atrium divides it intoanupper part (utricle)~~ and ~~lower part (saccule). At 10 weeks (30 mm.) this partition between the utricle and saccule is complete and extends inward .in such a way asto split the orifice of the endolymphatic duct~~.



	{{Streeter1906 figures}}		{{Streeter1906 figures}}

2015-07-23T07:13:37Z

← Older revision		Revision as of 18:13, 23 July 2015
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			FIG.4. Diagram representing the growth and stages of differentiation of the human membranous labyrinth. At 31h weeks (6-7 mm.) the ear vesicle consists of two simple pouches, into the upper of which opens the endolymphatic appendage. At 4 weeks
			sac.endolymph. ,sac, endolymph. duct. endolymph.,
			(9 mm.) there is at the base of the vestibular pouch an atrium, the space destined to
			form the utricle and saccule. At 5 weeks (12 mm.) this space is circumscribed from the
			cochlear pouah below by a constriction corresponding to the ductus reuniens, and above
			Prom the rest of the vestibular pouch by the formation of the semicircular canals. At
			6 weeks (20 mm.) an ingrowth of the wall of the atrium divides it intoanupper part (utricle) and lower part (saccule). At 10 weeks (30 mm.) this partition between the utricle and saccule is complete and extends inward .in such a way asto split the orifice of the endolymphatic duct.



	{{Streeter1906 figures}}		{{Streeter1906 figures}}

2015-07-23T07:10:58Z

Z8600021 uploaded a new version of File:Streeter1906 fig03.jpg

← Older revision	Revision as of 18:10, 23 July 2015
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2015-07-23T07:10:44Z

2015-07-23T07:10:26Z

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